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PVB Contact Form 7 Calculator

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PVB Contact Form 7 Calculator

by pbosakov

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Description

Overview

With PVB Contact Form 7 Calculator, you can easily turn any Contact Form 7 form into a calculator. Calculated fields are based on user input and selections in other parts of the form. The plugin can be used for creating various types of calculators, such as an ideal weight calculator, calorie calculator, quote calculator for hotel booking, car rental quote calculator, mortgage calculator, tax calculator, finance calculators, date calculator, etc.

Features

  • Advanced calculations – set your custom formula based on user input, for example:
    cost_per_day * days * (1 + (tax_percentage / 100))
  • Hide calculated fields – they can be visible to the user or not. Your choice!
  • Server-side calculation – you don’t have to disclose your top secret formula! Calculations are performed behind the scenes, on the server.
  • Calculate on button click – you can let your users trigger the calculations without submitting the form.
  • Calculate on submit – values are always calculated on submit, so you can use them in your notification emails.
  • Calculate on other events – you can also trigger calculations from another script at any time!
  • Correct floating-point math – PVB Contact Form 7 Calculator handles decimal floating-point math properly, unlike many online calculators that introduce rounding errors when converting to binary and back, yielding incorrect results (such as 0.6 + 0.3 = 0.8999).

Video tutorial

Contact Form 7 5.0 or later is required.

  1. Download the plugin zip file to your computer;
  2. Unzip the file;
  3. Upload the pvb-contact-form-7-calculator directory to your /wp-content/plugins/ directory.
  4. Activate the plugin from the “Plugins” menu in WordPress.
  5. Refer to the plugin documentation.
  1. Loan calculator

    Loan calculator

  2. Booking calculator

    Booking calculator

  3. Ideal weight calculator

    Ideal weight calculator

Can I use PVB Contact Form 7 Calculator for currency conversion?

You can use the “wpcf7calculate” jQuery event to trigger currency conversion or other post-processing operations after a calculation. You can code your own Javascript function and place it somewhere on your website to call a third-party currency conversion API. Here is an example:

jQuery(function($) {
      $('form').on('wpcf7calculate', function() { 
        var dollars = jQuery('input[name=total]').val();
        var euro = currencyConvert(dollars, 'USD', 'EUR');
        if (euro === false) {
            alert('Currency conversion failed');
        } else {
            alert(dollars + ' dollars = ' + euro.toFixed(2) + ' euro');
        }
        return;
    });
});

function currencyConvert(amount, from, to) {
    var result = '';
    var convertUrl = "https://free.currencyconverterapi.com/api/v3/convert?q=" + from + "_" + to + "&compact=ultra";
    var rate = false;
    jQuery.ajax({
        url: convertUrl,
        async: false,
        type: "GET",
        dataType: "json",
        success: function (data) {
            rate = data[from + "_" + to];
        }
    });
    return rate ? parseFloat(amount) * parseFloat(rate) : false;
}

How does the calculator handle multiple checkbox groups?

If more than one checkbox is selected in the same group, the values will be summed. To avoid the possibility to select more than one checkbox at the same time, use the “exclusive” modifier in the checkbox tag, or use radio buttons instead. More information and examples are available in the plugin documentation.

The undisputed KING of calculations

By beastech on October 23, 2023

This plugin turned Contact Form 7 from useful to powerful. Thanks go out to Petko for the brilliant support as well. The support for PVB Contact Form 7 Calculator Add-on is incredible. I can't thank you enough Petko for all of the help!

Very simple and furiously efficient

By Vinzou (vinzou) on March 20, 2021

Don't download another one, this is the best simple/efficient one. Now just two words : Thank You. (no problem with the latest version of WP)

Wery usability plugin

By Mateusz (enet2020) on August 28, 2020

Hi, I use this plugin for a mont. I'm really amazing usefulness the function. Wery usability plugin. Thanks for PVB Calculator. Regards Mateusz

A very useful plugin, I recommend!

By sylvain68 on May 1, 2020

I use this add-on for Contact Form 7 in order to calculate fields of online sales certificate and it works very well. If you want advanced features (multiple calculated fields, intermediate variables...), then you will need the PRO version. But the investment is well worth the cost 😉

One of the best plugins i have ever used!

By kerkeni on February 19, 2020

I am very happy with this great plugin. I purchased the pro version and Petko helped me a lot with his quick responsiveness, creative mindset, amazing cooperation by explaining some functionalities. All in all I would recommend @pbosakov for this excellent plugin!

Excellent plugin

By areinheimer on January 13, 2020

The plugin is easy to use and the pro version allows you to make multiple calculated tags. It is a great addition to Contact Form 7. I'm using the pro version to calculate payment information for the customer along with the integrated Stripe checkout. Although the email and attached files are sent before checkout, there are separate redirect pages where the customer may be sent after successful or unsuccessful payment.

Easy to use Calculator

By johnski3000 on May 19, 2019

The calculator was easy to use and well documented. I needed to create totals for a event registration. It worked great for that.

Useful plugin

By roemrofhessa on May 17, 2019

Great and useful plugin

Amazing plugin

By Adage Group (adage) on February 25, 2019

Amazing plugin, very well built, with great documentation. Bought premium extension and support also is perfect ! Thank you.

Super useful calculator plugin

By MattV on November 22, 2018

I was looking for a simple order form calculator. The fancy premium ones were a bit overkill, so I ended up using CF7 with this plugin. It works like a charm. The plugin integrates perfectly with CF7 and is very versatile.

1.1.0

  • Phased out Pro version and removed promotional notices
  • Added support for WordPress plugin dependency management
  • Tested for compatibility with WordPress 7.0

1.0.14

  • Updated translation loading timing to match WordPress best practices

1.0.13

  • Updated text domain for translations
  • Various security fixes and improvements

1.0.12

  • Updated dependencies
  • Tested for compatibility with WordPress 6.7

1.0.11

  • Fix: PHP 8 fatal error
  • Fix: Calculate button shortcode issues
  • Code formatting and documentation updates
  • Tested for compatibility with WordPress 6.3

1.0.10

  • Fix: error when adding negative numbers
  • Fix: calculation field names with uppercase letters do not work properly
  • Fix: WordPress warning related to add_submenu_page function parameters
  • Fix: Calculate button not working with some themes

1.0.9

  • Fix: fatal error when attempting to activate both free and premium versions of the plugin at the same time

1.0.8

  • Fix: division bug

1.0.7

  • Fix: multiple guidelines and security fixes

1.0.6

  • Update: better user control over admin notifications

1.0.5

  • Fix: incorrect handling of non-integer exponents

1.0.4

  • Fix: avoid interfering with CF7 style sheets

1.0.3

  • Fix: cf7-hide option not working with some themes

1.0.2

  • Fix: rounding results to a whole number not working

1.0.1

  • Fix: groups of multiple checkboxes not supported

1.0.0

  • initial release
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